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Table 2 Distribution of the correct answer for single questions in the questionnaire completely filled

From: Radiation risks knowledge in resident and fellow in paediatrics: a questionnaire survey

Questions Answers n (%)
Correct Incorrect Do not know/no answer
MDCT examination involves the use of X-rays? 50 (98%) - 1 (1,9%)
Mammography involves the use of ionizing radiation? 44 (86%) 4 (7,8%) 3 (5,8%)
MRI involves the use of ionizing radiation? 40 (78%) 1 (1,9%) 10 (19%)
PET involves the use of X-rays? 14 (27%) 28 (54%) 9 (17%)
DEXA involves the use of X-rays? 18 (35%) 21 (41%) 12 (23%)
Which exam involves higher exposure to ionizing radiation among: total body MDCT, Color Doppler, renal scintigraphy? 42 (82%) 9 (17%) -
What is the dose (Entrance surface dose) recommended by the European Commission in the diagnostic reference levels for a chest x-ray in a new born? 21 (41%) 19 (37%) 11 (21%)
IS the weight an important parameter that affect patient radiation dose? 29 (56%) 20 (39%) 2 (3,9%)
A MDCT scan of the abdomen in a child (1–5 years) correspond to a radiation dose of (expressed in number of chest x-ray) 8 (15%) 40 (78%) 3 (5,8%)
Renal scintigraphy involves prolonged exposure to ionizing radiation (in terms of time)? 8 (15%) 40 (78%) 3 (5,8%)
Radiation dose of a child submitted to MRI is (expressed in number of chest x-ray) 43 (84%) 7 (13%) 1 (1,9%)
ALARA principle refers to 14 (27%) 18 (35%) 19 (37%)
During pregnancy an ortopantomography can be easily performed? 20 (39%) 19 (37%) 12 (23%)
Foetus radiation damage is determined with high probability for a dose of? 13 (2,5%) 29 (56%) 9 (17%)